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Brooks fruit spot

Mycosphaerella pomi (Pass.) Lindau

Appears as irregular, slightly sunken dark green lesions on immature fruit. On red-skinned varieties, fully developed lesions are dark red to purple and are generally no larger than 10 mm in diameter (A). On lighter-skinned varieties, lesions turn dark green. Brooks fruit spot does not cause significant browning of the flesh beneath the lesion (B).

Distribution

Occurs throughout the northeastern and mid-Atlantic US and has been reported in Canada.

Similar Species

Symptoms can be confused with physiological disorders such as bitter pit and Jonathan spot, but these disorders do not appear until later in the season. The disease may also be confused with stink bug damage.

Management

The disease is of minor importance because it is usually controlled by fungicides applied to control other diseases. Occasionally seen on Jonathan, Golden Delicious, Grimes Golden, Rome Beauty, Stayman, and Winesap.

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